Himax Technologies, Inc.

Himax Display, Inc.

Yao-Hung Lai

Chia-Cheng Lai

Chia-Chuan Lee

Chih-Fu Lee

A light source control method of a projector is provided. The light source control method includes the following steps. A frame data of a frame period is received. Gray distributions of a plurality of colors in the frame data are obtained by analyzing the frame data. Whether to shut all or a portion of a plurality of color light sources of the projector is determined according to the gray distributions of the colors. Therefore, the power consumption of the projector can be reduced.

Light source control method of projector

An interpolation FIR filter uses a coefficient to generate an interpolation value of a first and second input value. The interpolation FIR filter has several arithmetic units, an adder, and a divider. The narithmetic unit outputs a partial product by selecting one of the first and second input values according to an nbit of the coefficient, and multiplying the selected input value by 2. The adder outputs a sum all the partial products and the first input value. The divider divides the sum by 2, wherein m is an amount of the arithmetic units.

Interpolation FIR filter and method thereof

A source image with an input vertical resolution and an input horizontal resolution is received using an input clock signal. An intermediate image with an output vertical resolution and the input horizontal resolution is generated using an intermediate clock signal by scaling the source image. An output image with the output vertical resolution and an output horizontal resolution is generated using an output clock signal by scaling the intermediate image. The frequency of the intermediate clock signal is equal to the frequency of the output clock signal multiplied by the ratio of the input horizontal resolution to the output horizontal resolution.

Growing community of inventors

Tainan County, Taiwan

Yao-Hung Lai